12402560 has 32 divisors (see below), whose sum is σ = 29651400. Its totient is φ = 4960768.

The previous prime is 12402547. The next prime is 12402569. The reversal of 12402560 is 6520421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9050 + ... + 10329.

Almost surely, 2^12402560 is an apocalyptic number.

12402560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12402560 is an abundant number, since it is smaller than the sum of its proper divisors (17248840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12402560 is an equidigital number, since it uses as much as digits as its factorization.

12402560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19398 (or 19386 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12402560 is about 3521.7268491466. The cubic root of 12402560 is about 231.4748327114.

Adding to 12402560 its reverse (6520421), we get a palindrome (18922981).

The spelling of 12402560 in words is "twelve million, four hundred two thousand, five hundred sixty".